Datasheet

13
Table 2. Control Shift Register.
L D
6
D
5
D
4
D
3
D
2
D
1
D
0
Bit D
7
Set Low
to Select
Control
Word 0
 On-Time Duty Relative
Oscillator Factor Brightness
Cycles (%) (%)
0 0 0
1 0.2 1.7
2 0.4 3.3
3 0.6 5.0
4 0.8 6.7
5 1.0 8.3
7 1.4 11.7
9 1.8 15
11 2.1 18
14 2.7 23
18 3.5 30
22 4.3 37
28 5.5 47
36 7.0 60
48 9.4 80
60 11.7 100
PWM Brightness Control
L L L L
L L L H
L L H L
L L H H
L H L L
L H L H
L H H L
L H H H
H L L L
H L L H
H L H L
H L H H
H H L L
H H L H
H H H L
H H H H
Peak Current Typical Peak Relative Full
Brightness Pixel Current Scale Current
Control (mA) (Relative Brightness, %)
H L 4.0 31
L H 6.4 50
L L 9.3 73 (Default at Power Up)
H H 12.8 100
SLEEP MODE
L – DISABLES INTERNAL OSCILLATOR-DISPLAY BLANK
H – NORMAL OPERATION
CONTROL WORD 0
H L L L L L D
1
D
0

CONTROL WORD 1
Bit D
7
Set High
to Select
Control
Word 1
Reserved for Future
Use (Bits D
2
-D
6
must
be set Low)
Serial/Simultaneous Data Out
L – D
OUT
holds contents of Bit D
7
H – D
OUT
is functionally tied to D
in
External Display Oscillator Pres-
caler
L – Oscillator Freq ÷ 1
H – Oscillator Freq ÷ 8